CA578014A - Multi-line telephone substation instrument and circuits - Google Patents

Multi-line telephone substation instrument and circuits

Info

Publication number
CA578014A
CA578014A CA578014A CA578014DA CA578014A CA 578014 A CA578014 A CA 578014A CA 578014 A CA578014 A CA 578014A CA 578014D A CA578014D A CA 578014DA CA 578014 A CA578014 A CA 578014A
Authority
CA
Canada
Prior art keywords
circuits
line telephone
telephone substation
substation instrument
instrument
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA578014A
Other languages
French (fr)
Inventor
E. Wood Fredric
L. Sargisson Robert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Telephone Laboratories Inc
Original Assignee
General Telephone Laboratories Inc
Publication date
Application granted granted Critical
Publication of CA578014A publication Critical patent/CA578014A/en
Expired legal-status Critical Current

Links

CA578014A Multi-line telephone substation instrument and circuits Expired CA578014A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA578014T

Publications (1)

Publication Number Publication Date
CA578014A true CA578014A (en) 1959-06-16

Family

ID=35753878

Family Applications (1)

Application Number Title Priority Date Filing Date
CA578014A Expired CA578014A (en) Multi-line telephone substation instrument and circuits

Country Status (1)

Country Link
CA (1) CA578014A (en)

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